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new helper: ihold()

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Clones an existing reference to inode; caller must already hold one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2010-10-23 11:11:40 -04:00
commit 7de9c6ee3e
40 changed files with 57 additions and 49 deletions
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3
fs/nfs/getroot.c
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@ -54,8 +54,7 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i
iput(inode);
return -ENOMEM;
}
/* Circumvent igrab(): we know the inode is not being freed */
atomic_inc(&inode->i_count);
ihold(inode);
/*
* Ensure that this dentry is invisible to d_find_alias().
* Otherwise, it may be spliced into the tree by